Blutengel (; stylized BlutEngel; German for "Blood Angel") is a German electronic music group formed by singer Chris Pohl (also of the groups Terminal Choice, Tumor and Miss Construction and the owner
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b3b259073e511c241957bb9c93f973dac59c0b307e0bd20002834af20af2b38. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ecdea871-561d-4961-9db6-79ea6406a834.json and https://artists.proofprofile.net/proofs/artist/ecdea871-561d-4961-9db6-79ea6406a834.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Oxidising Angel / Soultaker / Nachtbringer (25th Anniversary Deluxe Edition)
The Oxidising Angel - Long Version (2023 Remastered Version)
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe705e60f26b1ca58cf7cdc61340cf358e516e52a3e6850f1fae5d2040f00320. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEBZ70500075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3ffb0745a38fe533a60eb78bd3918fbb750e5748a3ef62a1f6390c2692bb91a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEBZ70900559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb7f3217bf2aab3298c052bbaa77cd30a813cd8bb9f8b285b83c4b12ac0d4dba. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEBZ71101067.
Cry Little Sister - 2023 Remastered Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb74c99a06f524441771139ebe1fdc5a80f2e95a3b473fc981366327fe259f0d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEBZ70500076.
Burning Heaven - 2023 Remastered Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51aa9572e1022011b87fea4836ed9230f2a27081e57ce59a709a470a5756e657. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEBZ70500077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cf489fe1fb7a99c8aee54a2477ca57bcc4673b633d328f6cd5e14037a07f3bd. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEBZ71101070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35d905936c51f22b40ef7e9ee0681a64e4187d33106f40ae2f8836a6d712ed5a. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEBZ70500079.
Angels of the Dark - Remixed by Lost Area (2023 Remastered Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b5f9bf6df6ca7199685a9c219cef6790ef05f23a3b5d6e7589bc68820c6ca4d. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEBZ70500080.
Falling - Remixed by Angelus Mortus (2023 Remastered Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b8d8732958fc9a1e57559dae4a3b2de83ac217a2551c13af6bfb51018b59d98. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEBZ70500081.
Navigator - Remixed by Noxx / Rilinger (2023 Remastered Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f150972f52f86c34c55b83b970c7b7f56f9da0642621c6ba2d2ff84268529ef. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEBZ70500082.
The Oxidising Angel - Single Edit (2023 Remastered Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b8b731386d9b0ff6575c7f6e76bac782c6c71330c34fe50481581605149421d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEBZ70500086.
Soultaker - Lost Area Remix (2023 Remastered Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe854ecc4e962371df7edb7554f815a97ddf2b83d3735d82f990b1d9b91b909cc. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEBZ70900569.
Black Roses - Live 2011 (2023 Remastered Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05f884e4e710bf0fc959f86265d838fc2980093bad530e457130a9f41c2efde3. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEBZ71101078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25353551678968849e3ecb35c858cadda082b655a922719750f3b8498096e8e1. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEBZ72000343.
Nothing but a Void - Alternative Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f9139382934c0562bb1a959a133dca369c6df7a14d4114ba7767533238c008b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEBZ72000346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f4cdb24e55edc209f6051da2216804421948bbe8a9b5a66fa10f8e8067e0ec3. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEBZ72000348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef5474b2ec0c8d1c1a3a35523270b2c783ca4ad366621b5afcbd5900c26c4c20. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEBZ72000349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f1073494a549f039adcb69f9408602c79cc8b46b348c85bf93357fea2b80ed8. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEBZ71700088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa67e4026cdb4f7da12e103f35418e507ebbb6e23a28df14d4bea4bc3164c36ea. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEBZ71400270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdbfbc805bcb5e405be8ce60b78f0fa1d28edbd94170f9758b977cae8dada31b. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEBZ71800602.
Electronic Saviors; Industrial Music to Cure Cancer, Vol. IV: Retaliation
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8d0fa91ce26becf55e5f2b0b071ae71550faf9197d44974f3ad48e2608721b0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US57M1601520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c251470e11037675b9e3e29c78f9794d81daf7c2ce102aa08cacad784834dfd. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEBZ71800442.